• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Saturday, October 11, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Biology

Globalization is reweaving the web of life

Bioengineer by Bioengineer
September 2, 2020
in Biology
Reading Time: 4 mins read
0
IMAGE
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

Introduced species are reshaping how plants and animals interact in ecosystems worldwide

IMAGE

Credit: Steve Attwood

As introduced species spread around the world, the complex networks of interactions between plants and animals within ecosystems are becoming increasingly similar, a process likely to reinforce globalization’s imprint on nature and increase risks of sweeping ecological disruption.

Researchers at the University of Maryland’s National Socio-Environmental Synthesis Center (SESYNC) and at the Center for Biodiversity Dynamics in a Changing World (BIOCHANGE) at Aarhus University, have found that introduced species are reshaping mutualistic relationships between plants and animals at an accelerating pace, creating new ecological links between previously disconnected ecosystems. Their new study is featured on the cover of the Sept. 3 issue of Nature and published online September 2.

Featured on the cover of the Sept. 3 issue of Nature, the study was carried out by researchers at the University of Maryland’s National Socio-Environmental Synthesis Center (SESYNC) and Center for Biodiversity Dynamics in a Changing World (BIOCHANGE) at Aarhus University.

Losing Biodiversity’s Portfolio Effect

Biodiversity is changing worldwide not only through the loss of species, but by species composition becoming more similar across different regions–a process called biotic homogenization. Just as diversification in an investment portfolio buffers it from downturns in certain sectors, diversity across ecosystems buffers natural systems from widespread collapse. The researchers found that homogenization affects mutualistic networks made up of plants and the animals that disperse their seeds. By compiling data from hundreds of sites around the world, they found that interactions involving a plant or animal that was an introduced species has increased seven-fold over the past 75 years. The resulting loss of the portfolio effect poses greater risk of sweeping disruption by broad-scale stressors such as climate change or disease outbreaks.

Introduced species are also influencing the structure of mutualistic networks in ways that reduce stability of individual ecosystems. When researchers look at the web of species interactions within natural ecosystems, there are often ‘compartments’ of closely interacting species that interact little outside their compartment. “This makes a network resilient because a disturbance such as overhunting, disease, or a pesticide that affects a certain species does not spread to affect species in other compartments,” explained study author Evan Fricke, of SESYNC. The study shows that introduced species are often so generalized that they interact across multiple compartments, causing the loss of compartmentalized network structure and exposing more species to a given disruption.

A Breakdown of Geographic Isolation

The research also shows how regions that naturally had different combinations of species and interactions because of historic geographic isolation now are linked. “Eurasian blackbirds dispersing hawthorn seeds is a common mutualistic interaction among species native to Europe,” Fricke said. “Today, that same species interaction also occurs on the opposite side of the planet in New Zealand where those species have been introduced by people.”

The researchers quantified how introduced species have altered geographic patterns in the global web of mutualistic interactions. “What’s striking to see is that natural biogeographic patterns that have existed for millions of years are being erased so quickly,” Fricke said. A consequence of these new connections is that co-evolved relationships unique to isolated places in Madagascar, Hawaii, or New Zealand are now affected by introduced species. The loss of isolation changes the co-evolutionary trajectories of these mutualisms, which may cause species to evolve traits more similar to species in other parts of the world. “However, the introduced species may with time also themselves diverge from their source populations, adapting to their new setting,” added study author Jens-Christian Svenning, professor and director of BIOCHANGE.

Feedbacks Shaping Future Ecosystems

As mutually beneficial interactions, seed dispersal mutualisms can determine which species are successful as ecosystems change over time. Compared to native species, introduced species are twice as likely to interact with partners that are also introduced, according to the study. This feedback may favor regeneration of introduced plants over native species. “These could have knock-on homogenizing effects for plant communities during natural reforestation of degraded forests, as well as plant range shifts as a result of climate change,” Fricke said.

Managing the Loss of Complexity

“While many unintentionally introduced species may cause homogenizing effects that threaten ecosystem integrity, other introduced species may provide ecological benefits or even reverse the effects of biotic homogenization,” Svenning continued. In the Hawaiian Islands, introduced animals perform nearly all seed dispersal for native plants after numerous extinctions and severe declines in native bird populations. While Hawaii represents an extreme case, ecosystems around the world have experienced steep declines of their largest animals, many of which are important seed dispersers. Like the birds in Hawaii, introduced large mammals can perform functions missing due to the decline of native species. “Our future research will target which species interact in ways that are likely to further homogenize ecosystems and those that can reverse homogenization by filling ecological roles lost due to past species decline,” Svenning concluded.

###

Media Contact
Erin Duffy
[email protected]

Related Journal Article

http://dx.doi.org/10.1038/s41586-020-2640-y

Tags: BiodiversityBiologyEcology/Environment
Share12Tweet8Share2ShareShareShare2

Related Posts

RLCKs Phosphorylate RopGEFs to Regulate Arabidopsis Growth

RLCKs Phosphorylate RopGEFs to Regulate Arabidopsis Growth

October 10, 2025
Discovering New Proteomic Biomarkers for Hypertension

Discovering New Proteomic Biomarkers for Hypertension

October 10, 2025

Cold-Tolerant Germination in Hulless Barley Uncovered!

October 10, 2025

Tuberculosis Fat Boosts Immune Cells, Aids Bacteria

October 10, 2025
Please login to join discussion

POPULAR NEWS

  • Sperm MicroRNAs: Crucial Mediators of Paternal Exercise Capacity Transmission

    1205 shares
    Share 481 Tweet 301
  • New Study Reveals the Science Behind Exercise and Weight Loss

    102 shares
    Share 41 Tweet 26
  • New Study Indicates Children’s Risk of Long COVID Could Double Following a Second Infection – The Lancet Infectious Diseases

    97 shares
    Share 39 Tweet 24
  • Revolutionizing Optimization: Deep Learning for Complex Systems

    84 shares
    Share 34 Tweet 21

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

KLF5 Boosts Lung Cancer Spread via RHPN2 Pathway

Creating Trauma-Informed Care for the Homeless

Linking Emotional Intelligence, Loneliness, and Eating Disorders

Subscribe to Blog via Email

Success! An email was just sent to confirm your subscription. Please find the email now and click 'Confirm' to start subscribing.

Join 63 other subscribers
  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.